| Flag: | POL |
| Date: | 18 September 1998 |
| City: | Linköping |
| Event: | 6 of 6 (24) |
| Referee: | Wolfgang Glas |
| Flag Ref: | GER |
| Stadium: | Polonia Stadium |
| Track: | speedway track |
| Name1: | Tomasz Gollob |
| Flag1: | POL |
| Name2: | Ryan Sullivan |
| Flag2: | AUS |
| Name3: | Jimmy Nilsen |
| Flag3: | SWE |
The 1998 Speedway Grand Prix of Poland was the sixth race of the 1998 Speedway Grand Prix season. It took place on 18 September in the Polonia Stadium in Bydgoszcz, Poland[1] It was the fourth Polish SGP, but first in Bydgoszcz. Grand Prix was won by Pole Tomasz Gollob, who was riding for Polonia Bydgoszcz in Polish League. It was his third winning in GP history.
The Speedway Grand Prix Commission nominated Antonín Kasper, Jr. (Czech Republic) and two Poles: Robert Dados (1998 Under-21 World Champion who qualify to the 1999 Speedway Grand Prix) and Jacek Gollob as Wild Card.